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https://issues.apache.org/jira/browse/KAFKA-5824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-5824.
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Resolution: Won't Fix
Resolving this, because `ProcessorTopologyTestDriver` is an internal class and
we now offer public test-util package with class `TopologyTestDriver` that
should be used instead.
> Cannot write to key value store provided by ProcessorTopologyTestDriver
> -----------------------------------------------------------------------
>
> Key: KAFKA-5824
> URL: https://issues.apache.org/jira/browse/KAFKA-5824
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.11.0.0
> Reporter: Dmitry Minkovsky
> Priority: Major
>
> I am trying to `put()` to a KeyValueStore that I got from
> ProcessorTopologyTestDriver#getKeyValueStore() as part of setup for a test.
> The JavaDoc endorses this use-case:
> * This is often useful in test cases to pre-populate the store before
> the test case instructs the topology to
> * {@link #process(String, byte[], byte[]) process an input message},
> and/or to check the store afterward.
> However, the `put()` results in the following error:
> {{
> java.lang.IllegalStateException: This should not happen as offset() should
> only be called while a record is processed
> at
> org.apache.kafka.streams.processor.internals.AbstractProcessorContext.offset(AbstractProcessorContext.java:139)
> at
> org.apache.kafka.streams.state.internals.CachingKeyValueStore.put(CachingKeyValueStore.java:193)
> at
> org.apache.kafka.streams.state.internals.CachingKeyValueStore.put(CachingKeyValueStore.java:188)
> at
> pony.UserEntityTopologySupplierTest.confirm-settings-requests(UserEntityTopologySupplierTest.groovy:81)
> }}
> This error seems straightforward: I am not doing the `put` within the context
> of stream processing. How do I reconcile this with the fact that I am trying
> to populate the store for a test, which the JavaDoc endorses?
> Thank you,
> Dmitry
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